Boot buckling aid



FIG. 1 is a top plan view of a boot buckling aid, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is an end view thereof;

FIG. 5 is an opposite end view thereof. 

The ornamental design for a boot buckling aid, as shown and described. 